Why can i never just be good?

Just an observation i have made through out the time i have played this game. I personally chose to have a small pool of champions and play 3 of them very well, while mainly spaming Vayne every single game both ranked and normal, to the point i probably have 400 games on her or so.

I win most mirror matches vs her and withought sounding like a complete douche, i often turn lost games in to wins, even when getting rekt in lane, im so use to having to come back form a bad lane every single game, that come backs from games that feel lost happen often. and because, this happens so often, i have to hear every other game how broken the champion im playing is, and how easy or no skill she is, or that i got carried by the support, even when i end games with scores like 30/2, constant objective pressure, wining team fights, i still hear from the enemy team or mine how my team is actuall doing everything, and im jsut the useless vayne player :c

it feels like the idea of me just being good at the champion is always out of the question, and not just with vayne, im sure this has happened to all of us, but i hear it almost every game from people playing champions like mordo/darius etc, it's getting old, and the one thing all of the people who say this have in common is generally no ranked games played on vayne at all or a grossly negative one.

I think that due to the fact that im use to losing lane just about every game to just about every match up, i have developed this necessarily trust or liking towards my teammates, because in reality you dont power spike till around lvl 12 if you go statikk over PD, PD only lvl 15, so you are very reliant on your team earlier on, i always look to congratulate people for a good performance, or thank them for carrying the game, but what i'm getting at, is that i have noticed this pattern of hate towards me in this game, just for being decent at the fucking champion, it's like chat is so damn pointless, it's just hate hate hate.

It does not matter if i 1v2 the bot lane and win, im not good, im jsut playing vayne, oh that penta, vayne so doesn't matter... peope like to act like shes the easiest champ in the game, witch she is far from, but they never play her, they complain but suck at her! and from personal experience, she was the hardest champion in the game to learn up there with zed, witch is why i chose to main her, it felt very challenging to play the champ, i remember my first 100 games with her were absolutely gross, her short range and squishiness make her very hard to lane with, and in team fights i did not have the animation cancelling skills to make use of her attack speed over flat AD, and most vaynes i see in gold/plat still can't for the most part, i don't claim to be naturaly good, i just play the champion a fuck ton.

So why does my hard work and hundreds of games perfecting my craft seems to count for nothing but hate? why do people in this game act that way constantly? why is it so hard to say, i played poorly and lost because the enemy was better, why does there always have to be a fucking excuse?